ASTROSAT CZTI

Data Quality Report

Orbit 18481

Creation date: 2024-06-27T17:50:35.524303
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_082T12_9000002738_18481cztM0_level2.evt modeM0/AS1A05_082T12_9000002738_18481cztM0_level2_quad_clean.evt
Size (bytes)188,311,68016,228,800
Size179.6 MB 15.5 MB
Events in quadrant A1,070,93087,528
Events in quadrant B1,704,74986,890
Events in quadrant C1,164,63786,589
Events in quadrant D1,625,06984,492

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044351
B064561
C048351
D063111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A199660.300601%
B199623111.573146%
C1996351.753507%
D1996874.358717%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 1996 1996 0 0 0.00% 0.00%
B 1996 1996 163 163 8.17% 8.17%
C 1996 1996 0 0 0.00% 0.00%
D 1996 1996 46 46 2.30% 2.30%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 15625 270.0 273 267 56.9
A 0 13 2502 39.29 273 267 56.9
A 0 226 2333 36.32 273 267 56.9
B 10 245 659004 12796.63 263 257 51.5
B 12 111 5660 104.96 263 257 51.5
B 11 111 4865 89.51 263 257 51.5
C 3 233 84841 1340.1 266 267 63.1
C 14 238 42020 661.59 266 267 63.1
C 13 61 1935 26.43 266 267 63.1
D 1 52 203691 3031.96 267 259 67.1
D 10 66 159982 2380.52 267 259 67.1
D 7 38 125546 1867.29 267 259 67.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter